| 青海省湟水河西宁段重金属元素的污染和评价 |
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| 引用本文： | 曾方明.青海省湟水河西宁段重金属元素的污染和评价[J].盐湖研究,2017,25(2):8-12, 59. |
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| 作者姓名： | 曾方明 |
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| 作者单位： | 中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海 西宁 810008 |
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| 基金项目： | 国家自然科学基金(41402314)；中国科学院青年创新促进会(2017468) |
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| 摘 要： | 湟水河是西宁市的重要河流。开展湟水河西宁段沉积物的重金属研究对西宁市的环境保护和生态建设具有重要意义。本次研究对湟水河西宁段表层泥质沉积和河水以及流域内的现代菜地表土和松树苗地表土的重金属含量进行了测定。同时,采用全新世以前的黄土、湟水河一级阶地的砂质沉积给出了西宁市自然状态下的重金属背景值。各类样品的重金属元素含量结果表明:1)自然状态下,Pb为29.5 mg/kg,As为15.6 mg/kg,Hg为0.01 mg/kg,Cd为0.18 mg/kg,Cr为31.1 mg/kg。2)河流表层泥质沉积的重金属含量平均值,Pb为45.2 mg/kg,As为7.8 mg/kg,Hg为0.02 mg/kg,Cd为0.48 mg/kg,Cr为48.8 mg/kg。3)总体上,河流表层泥质沉积、现代菜地表土和松树苗地表土的Cd、Pb、Hg、Cr均比自然状态下的背景值要高。4)湟水河西宁段已出现较明显的重金属污染,应控制Cd等重金属元素向河流中的排放。
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| 关 键 词： | 西宁 湟水河 重金属 环境污染 |
| 收稿时间： | 2015/12/12 0:00:00 |
| 修稿时间： | 2016/1/5 0:00:00 |
Assessment of heavy metal pollution in the part of Huangshui River in Xining, Qinghai Province |
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| ZENG Fang-ming.Assessment of heavy metal pollution in the part of Huangshui River in Xining, Qinghai Province[J].Journal of Salt Lake Research,2017,25(2):8-12, 59. |
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| Authors: | ZENG Fang-ming |
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| Institution: | Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, 810008, China |
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| Abstract: | : Huangshui River is an important river in Xining City.Study on heavy metals in Xining section of the Huangshui River has great significance for environmental protection and ecological construction in Xining.In the present work heavy metals in surface muddy sediments and water as well as modern topsoil for cultivating vegetable and pine seedling in Xining section of the Huangshui river were surveyed.Meanwhile, pre Holocene loess and sandy sediment from river terrace (T1) of the Huangshui River were applied to give the natural background state of heavy metals in Xining. Concentrations of heavy metals in various samples showed that: 1) Under the natural state, Pb is 29.5 mg/kg, As is 15.6mg/kg, Hg is 0.01 mg/kg, Cd is 0.18 mg/kg, and Cr is 31.1 mg/kg in Xining.2)The average content of heavy metals in surface muddy sediments of the Huangshui River showed that Pb is 45.2 mg/kg, As is 7.8 mg/kg, Hg is 0.02 mg/kg, Cd is 0.48 mg/kg, and Cr is 48.8 mg/kg.3) Generally,Cd,Pb,Hg,Cr in river surface muddy sediments, modern vegetable topsoil and pine seedling surface soil are higher than the natural background values.4)The Xining section of the Huangshui river evidently shows heavy metal pollution.The emissions of Cd and other heavy metals into Huangshui River should be controlled. |
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| Keywords: | :Xining Huangshui river Heavy metals Environmental pollution |
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